Wire-drawing apparatus



Nov. 19, 1929.

' H. l.. BLOOD l WIRE DRAWING APPARATUS Filed June 8. 1927 .Pasada Yiaovqia, 192e Y Y UNITED STATE PATENT oFFlcE HAROLD LANGLEY BLOOD, OF OAK PARK,

ILLINOIS, ASSIG-NOR T WESTERN ELECTRIC .COMPANY, INCORPORATED, OF NEW YORK, N. Y., A CORPORATION 0F NEW. YORK WIRE-DRAWING APPARATUS Application led .Tune 8, 1927. Serial No; 197,297.

- This invention relates to wire drawing apparatus, and more particularly to the mount'- ng of dies` in wire drawing apparatus.

In the practice of drawing wire-through dies mounted in a fixed position, it has beenl found in some instances that extreme care must be exercised to prevent the formation of a deleterious deposit of metallic dust within the die opening, which might cause the.

production of roughl non-uniform wire and result in considerable breakage. Maintaining the dies4 in a fixed or stationary position also usually confines thewire to a localized portion of thecapstan surface, tending to.

wear grooves therein andv necessitate premature replacements ofthe capstan.

The primary object of the invention is to providega simple, durable and eii'icient means for speedilyA drawing wire of uniform and accurate cross-section.

In order to attain this and other objects, and in accordance' with the general features of the invention, one embodiment thereof includes a shelf or holder resting'on ball bear- H1 ra ity of drawing dies. A circular motion is imparted to the shelf by an eccentric arrangement, which causes the wire as it is drawn through the supported dies by a suitable capstan to travel backward and forward across the face of'each step of a stepped capstan In addition, this 'arrangement keeps the mouth of the die clean by moving the wire with a wiping action around the entire circumference of the draw hole of eaclidie.

Other objects and advantages of this invention will be apparent from the following detailed description taken in connection with the accompanying drawing, in which- Fig. 1 is a fragmentary front elevational view, partially in section, of a wire drawing apparatus of a well known type in which is incorporated oiie embodiment of the invention s and which is adapted to support a plu Referring now to the drawing, wherein" view taken on vlike numerals have been employed to designate similar parts throughout the several views, and whichillustrates the invention as applied to a wellknown type `oi': wire drawing machine such as is disclosed in detail in Patent 1,599,393, issued September 7, 1926 to H. l3lount,lonly such portions of the machine' being shown as are essential to a coinplete understanding of the invention, upper and lower shelves or holders 10 and 11 are provided whichare adapted to support a lurality of wire drawing dies 18 of any s itable type. The die shelves 10 and y11 are supported by a bracket 14 which isfastened to the machine frame l5 in any suitable manner, such as by screws 16. These shelves are supported by and slidable between steel balls 17 located in circular recesses 18 provided in which .is operatively connected with the shaft through a gear 26 anda sprocket chain 27. The driving gear 25 may be connected in any suitable manner with the 'mechanism ('not shown) y which actuates the conventional stepped capstan 28 positioned immediately beneath' the shelf 11. From the foregoing rotation is im- In the operation of the machine a wire 29 -is strung through the dies 13 and thence around conventional idler pulleys 30 above the die shelf 10 and around the stepped cape stan 28. From the foregoing description it will be understood that when the driving gear 25 rotates, the' capstan 28 will also rotate and draw the wire 29 through the dies 13 which at the same time are moving in a circular path, as clearlyy shown in Fig. 4 wherein the dot and dash lines represent the outline of one of the dies 13 during various periods of a complete cycle. Since the upper portions of each pass of the tained in relatively fixed positions within the grooves of the idler pulley 30, this circulatory movement imparted to the dies causes the wire 29 to travel backward and forward ac ross the entire widthl of each step in the capstan, thus preventing the wearing of grooves therein. This circulatory movement of the.

dies also causes the wire 29 passing therethrough to wipe the entire circumference of the die mouth, thereby precluding the acculnulation of injurious deposits therein, such as metallic dust. A compound chamber 32, which may be fed in any suitable manner, is mounted upon the die shelf 10 and is provided with spouts 33 and 34 to pernait of the forcible ejectionof a lubricant into the die faces, thereby serving to wash away material loosened bythe wiping action of the wire and to effectively lubricate the wire.

What is claimed is: y

1. In a wire drawing apparatus, a die holder, a die supported by the holder, means for drawing wire through the die, and means i for imparting a rotary movement to the die to reciprocate the wire drawn .therethrough across the face of the drawing means and to 'wipe the mouth of thev die with the wire.

2. In a wire drawing apparatus, a movable die holder, a die supported by the holder, means for drawing wire through the die,

and means for causing the opening in 'the supported die to be moved in an arcuate path to reciprocate the wire drawn therethrough across the face of the drawing means .and to wipe the opening of the die with the wire.

3. In a wire drawing apparatus, a movable die holder, a die supported by the holder, an element for drawingwire through the die, and means for moving'the-die in a rotary path to effect a wiping action between the orifice of the die vand the Iwire drawn therethrough and to reciprocate the wire across the surface of the drawing element.

4. In a wire drawing apparatus, a mov able holder for carrying a die, means for wire are main-v versely to its drawing wirethrough the die an eccentric mechanism forimparting a rotaryI movement to the die holder, andineans for driving the eccentric to move the die in va cir-y cular path to move the wire transversely to the direction of drawing and to wipe the circular orifice of thedie with the wire.

5. In a'wire drawing apparatus, a support, a die holder slidable therein, friction reducing means associated with the holder,

port, a pair of horizontally disposed parallel die shelves slidable in the support, ball bea-rings interposed between each shelf and the support, a rotatable shaft provided with eccentrics at each end thereof for actuating the shelves, a worm gear on the shaft, a drive shaft having a worm engaging the gear on the rotatable shaft, and means for rotating the drive shaft. y

8. In a wire drawing apparatus, a support, a die holder movable therein, a die mounted inthe holder for drawing wire, vmechanismfor moving tlie holder'in a circulatory path, and means for communicating power to the mechanism to movethe holder and the die in a circulatory path to reciprocate the wire transversely to its t effect a wiping action between the die and4 the wire.

and means direction of 'drawing and A 9. In a wire drawing apparatus, a support, l

a wiping action between the draw hole of the die,and the wire.

10. In a wire-drawing apparatus, a sup port, a die shelf slidable on the support, a drawing die carried by the shelf, a drawing capstan, a shaft', an eccentric mounted on said shaft, means on said shelf operatively associated with said eccentric, and means for rotating the shaft to impart arotary movement to said shelf and tothe die carried thereby to reciprocate the wire across the face of the ca pstan and to wipe the mouth of the die with the wire.

11. In a wire drawing apparatus, a sup# port, a plurality of die holders movable in n die in a rotary path to move the wire tr'ansi longitudinal axis andto effect through, eccentric mechanisms for moving the holders in a rotary path, and means -for a'ctuating the eccentric mechanisms to effect e synchronous movement of the holders to s- 5 multaneously move the dies in a rotary path to move the wire transversely to the direction of drawing and to Wipe the mouths of the dies with the wire.

In Witness whereof, I hereunto subscribe my name this`31st day of May, A. 11,1927. HAROLD LANGLEY BLOOD. 

